package cn.leafspace.scanningsystem.VoiceSupport;

import java.io.File;
import android.util.Log;
import java.io.IOException;
import android.os.Environment;
import android.util.TimeUtils;
import android.media.MediaRecorder;

public class AudioRecoder {
        private String filePath;                                             //文件路径
        private String FolderPath;                                           //文件夹路径
        private MediaRecorder mMediaRecorder;
        private final String TAG = "fan";
        public static final int MAX_LENGTH = 1000 * 60 * 10;                 //最大录音时长1000*60*10;
        private OnAudioStatusUpdateListener audioStatusUpdateListener;
        private long startTime;
        private long endTime;

        /*文件存储默认sdcard/record*/
        public AudioRecoder() {
            this(Environment.getExternalStorageDirectory()+"/record/");      //默认保存路径为/sdcard/record/下
        }
    
        public AudioRecoder(String filePath) {
    
            File path = new File(filePath);
            if(!path.exists())
                path.mkdirs();
    
            this.FolderPath = filePath;
        }

        /**
         * 开始录音 使用amr格式
         */
        public void startRecord() {
            // 开始录音
            /* ①Initial：实例化MediaRecorder对象 */
            if (mMediaRecorder == null)
                mMediaRecorder = new MediaRecorder();
            try {
                /* ②setAudioSource/setVedioSource */
                mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);// 设置麦克风
                /* ②设置音频文件的编码：AAC/AMR_NB/AMR_MB/Default 声音的（波形）的采样 */
                mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
                /*
                 * ②设置输出文件的格式：THREE_GPP/MPEG-4/RAW_AMR/Default THREE_GPP(3gp格式
                 * ，H263视频/ARM音频编码)、MPEG-4、RAW_AMR(只支持音频且音频编码要求为AMR_NB)
                 */
                mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    
                filePath = FolderPath + TimeUtils.getCurrentTime() + ".amr" ;
                /* ③准备 */
                mMediaRecorder.setOutputFile(filePath);
                mMediaRecorder.setMaxDuration(MAX_LENGTH);
                mMediaRecorder.prepare();
                /* ④开始 */
                mMediaRecorder.start();
                // AudioRecord audioRecord.
                /* 获取开始时间* */
                startTime = System.currentTimeMillis();
                updateMicStatus();
                Log.e("fan", "startTime" + startTime);
            } catch (IllegalStateException e) {
                Log.i(TAG, "call startAmr(File mRecAudioFile) failed!" + e.getMessage());
            } catch (IOException e) {
                Log.i(TAG, "call startAmr(File mRecAudioFile) failed!" + e.getMessage());
            }
        }
    
        /**
         * 停止录音
         */
        public long stopRecord() {
            if (mMediaRecorder == null)
                return 0L;
            endTime = System.currentTimeMillis();
    
            //有一些网友反应在5.0以上在调用stop的时候会报错，翻阅了一下谷歌文档发现上面确实写的有可能会报错的情况，捕获异常清理一下就行了，感谢大家反馈！
            try {
                mMediaRecorder.stop();
                mMediaRecorder.reset();
                mMediaRecorder.release();
                mMediaRecorder = null;
    
                audioStatusUpdateListener.onStop(filePath);
                filePath = "";
    
            }catch (RuntimeException e){
                mMediaRecorder.reset();
                mMediaRecorder.release();
                mMediaRecorder = null;
    
                File file = new File(filePath);
                if (file.exists())
                    file.delete();
    
                filePath = "";
    
            }
            return endTime - startTime;
        }
    
        /**
         * 取消录音
         */
        public void cancelRecord(){
    
            try {
    
                mMediaRecorder.stop();
                mMediaRecorder.reset();
                mMediaRecorder.release();
                mMediaRecorder = null;
    
            }catch (RuntimeException e){
                mMediaRecorder.reset();
                mMediaRecorder.release();
                mMediaRecorder = null;
            }
            File file = new File(filePath);
            if (file.exists())
                file.delete();
    
            filePath = "";
    
        }
    
        private final Handler mHandler = new Handler();
        private Runnable mUpdateMicStatusTimer = new Runnable() {
            public void run() {
                updateMicStatus();
            }
        };
    
    
        private int BASE = 1;
        private int SPACE = 100;// 间隔取样时间
    
        public void setOnAudioStatusUpdateListener(OnAudioStatusUpdateListener audioStatusUpdateListener) {
            this.audioStatusUpdateListener = audioStatusUpdateListener;
        }
    
        /**
         * 更新麦克状态
         */
        private void updateMicStatus() {
    
            if (mMediaRecorder != null) {
                double ratio = (double)mMediaRecorder.getMaxAmplitude() / BASE;
                double db = 0;// 分贝
                if (ratio > 1) {
                    db = 20 * Math.log10(ratio);
                    if(null != audioStatusUpdateListener) {
                        audioStatusUpdateListener.onUpdate(db,System.currentTimeMillis()-startTime);
                    }
                }
                mHandler.postDelayed(mUpdateMicStatusTimer, SPACE);
            }
        }
    
        public interface OnAudioStatusUpdateListener {
            /**
             * 录音中...
             * @param db 当前声音分贝
             * @param time 录音时长
             */
            public void onUpdate(double db,long time);
    
            /**
             * 停止录音
             * @param filePath 保存路径
             */
            public void onStop(String filePath);
        }
    
    }